One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,8)(4,5)(6,13)(7,9)(10,12)(11,15)(14,16)(17,18,23,25)(19,28,30,24)(20,31,27,22)(21,26,32,29)(33,34,39,36)(35,42,37,40)(38,44,46,41)(43,47,45,48)(1,3)(2,8)(4,12)(5,10)(6,14)(7,11)(9,15)(13,16)(17,19,23,30)(18,24,25,28)(20,29,27,26)(21,31,32,22)(33,34,39,36)(35,40,37,42)(38,41,46,44)(43,47,45,48)(2,9)(3,11)(4,14)(10,13)(18,25)(20,27)(24,28)(26,29)(33,35,39,37)(34,40,36,42)(38,43,46,45)(41,47,44,48)(1,4,7,14)(2,5,9,16)(3,12,11,6)(8,10,15,13)(17,20,23,27)(18,22,25,31)(19,29,30,26)(21,28,32,24)(33,36,39,34)(35,40,37,42)(38,44,46,41)(43,47,45,48)(1,5)(2,4)(3,13)(6,8)(7,16)(9,14)(10,11)(12,15)(17,21,23,32)(18,26,25,29)(19,22,30,31)(20,24,27,28)(33,37,39,35)(34,40,36,42)(38,45,46,43)(41,47,44,48)(1,6,7,12)(2,10,9,13)(3,14,11,4)(5,15,16,8)(17,22)(18,27)(19,21)(20,25)(23,31)(24,26)(28,29)(30,32)(33,38,39,46)(34,41,36,44)(35,43,37,45)(40,47,42,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.